Alice Rémon, a pharmacist, is a prostitute who managed to leave the streets by getting married. Her husband dies one day, poisoned. Her mother-in-law, who hates her, accuses her of murder.

Marcus Numidius, a Roman tribune sent to Armenia to put down a gladiators' revolt, captures the rebels' popular leader, Aselepius. Princess Amira, with ambitions of being Queen and jealous of Asclepius' popularity, plans his death in the arena by substituting a lion for his human opponent